HID: steelseries: Add capacity_level mapping

The capacity level mappings are taken from:
https://support.steelseries.com/hc/en-us/articles/360049205612-How-do-I-know-the-Arctis-battery-level-how-do-I-charge-the-Arctis

Even if we have a percentage, exporting a capacity_level that matches
with the hardware warning levels means that upower can show warnings at
the same time as the hardware. So the headset starts beeping at the same
time as the critical warning notification appears :eyeroll:

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c
index 16138f7dae17fdf0005f1775f465471d66ece36e..f9ff5be9430962259597e018c59ae857de2c1efc 100644 (file)
--- a/drivers/hid/hid-steelseries.c
+++ b/drivers/hid/hid-steelseries.c
@@ -411,6 +411,15 @@ static void steelseries_headset_fetch_battery(struct hid_device *hdev)
                        "Battery query failed (err: %d)\n", ret);
 }
 
+static int battery_capacity_to_level(int capacity)
+{
+       if (capacity >= 50)
+               return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+       if (capacity >= 20)
+               return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+       return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+}
+
 static void steelseries_headset_battery_timer_tick(struct work_struct *work)
 {
        struct steelseries_device *sd = container_of(work,
@@ -442,6 +451,9 @@ static int steelseries_headset_battery_get_property(struct power_supply *psy,
        case POWER_SUPPLY_PROP_CAPACITY:
                val->intval = sd->battery_capacity;
                break;
+       case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+               val->intval = battery_capacity_to_level(sd->battery_capacity);
+               break;
        default:
                ret = -EINVAL;
                break;
@@ -469,6 +481,7 @@ static enum power_supply_property steelseries_headset_battery_props[] = {
        POWER_SUPPLY_PROP_STATUS,
        POWER_SUPPLY_PROP_SCOPE,
        POWER_SUPPLY_PROP_CAPACITY,
+       POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 };
 
 static int steelseries_headset_battery_register(struct steelseries_device *sd)